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3 years ago

Help me please!!!!!!!!!!!!!!!! (-7n^2-8n)+(-n^2+9n+9)

Mathematics

2 answers:

Sever21 [200]3 years ago

7 0

-9n^2+n+9 is the answer....

Setler [38]3 years ago

6 0

I combined like terms! I hoped this helps

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3 years ago

Find the mean and median for the graph?

netineya [11]

Answer:

so from looking at this we can see there is

0=5

1=5

2=3

3=2

4=4

5=1

6=2

7=2

8=1

9=1

now we have to add them up

5+6+16+5+12+14+8+9=75

and now we have to add up the total plots on the chart

5+5+3+2+4+1+2+2+1+1=26

now we divide

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so 2.9 is the mean

now we add up the number from least to greatest

0,0,0,0,0,1,1,1,1,1,2,2,2,4,4,4,4,5,6,6,7,7,8,9

so the medien is 4

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4 0

3 years ago

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kap26 [50]

It would be a reflection across the x acess

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3 years ago

Sergio plans to drive 150 miles at a rate of 60 miles per hour. He figures that it will take 25 hours. Which is NOT a reason why

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Answer:

Step-by-step explanation:

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Marta_Voda [28]

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Step-by-step explanation:

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3 years ago